* The sidewall of your tire. The sidewall of your tire will have information such as the tire size, load rating, and speed rating.
* Your vehicle's owner's manual. Your vehicle's owner's manual will have information about the recommended tire size for your vehicle.
* The internet. You can also find tire information online by searching for the tire size or by using a tire size calculator.
Here is an example of the information you might find on the sidewall of your tire:
```
P225/60R16 91V
```
* P indicates that the tire is a passenger car tire.
* 225 is the tire's width in millimeters.
* 60 is the tire's aspect ratio, which is the ratio of the tire's height to its width.
* R indicates that the tire is a radial tire.
* 16 is the tire's rim diameter in inches.
* 91 is the tire's load rating, which indicates the maximum amount of weight the tire can support.
* V is the tire's speed rating, which indicates the maximum speed the tire can safely travel.
If you have any questions about your tire information, you can always contact your local tire dealer.
